/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:41:15,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:41:15,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:41:15,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:41:15,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:41:15,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:41:15,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:41:15,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:41:15,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:41:15,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:41:15,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:41:15,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:41:15,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:41:15,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:41:15,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:41:15,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:41:15,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:41:15,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:41:15,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:41:15,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:41:15,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:41:15,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:41:15,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:41:15,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:41:15,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:41:15,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:41:15,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:41:15,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:41:15,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:41:15,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:41:15,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:41:15,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:41:15,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:41:15,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:41:15,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:41:15,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:41:15,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:41:15,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:41:15,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:41:15,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:41:15,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:41:15,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:41:15,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:41:15,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:41:15,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:41:15,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:41:15,912 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:41:15,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:41:15,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:41:15,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:41:15,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:41:15,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:41:15,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:41:15,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:41:15,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:41:15,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:41:15,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:41:15,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:41:15,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:41:15,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:41:15,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:41:15,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:41:15,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:41:15,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:41:15,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:41:15,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:41:15,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:41:15,916 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:41:15,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:41:15,916 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:41:15,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:41:15,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:41:16,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:41:16,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:41:16,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:41:16,248 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:41:16,249 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:41:16,249 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-10-09 17:41:16,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61520ac3/5d33acf0b2954b0093256965c368f324/FLAGf8905861c [2020-10-09 17:41:16,848 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:41:16,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2020-10-09 17:41:16,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61520ac3/5d33acf0b2954b0093256965c368f324/FLAGf8905861c [2020-10-09 17:41:17,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d61520ac3/5d33acf0b2954b0093256965c368f324 [2020-10-09 17:41:17,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:41:17,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:41:17,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:41:17,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:41:17,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:41:17,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687cd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17, skipping insertion in model container [2020-10-09 17:41:17,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:41:17,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:41:17,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:41:17,748 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:41:17,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:41:17,870 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:41:17,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17 WrapperNode [2020-10-09 17:41:17,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:41:17,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:41:17,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:41:17,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:41:17,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:41:17,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:41:17,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:41:17,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:41:17,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... [2020-10-09 17:41:17,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:41:17,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:41:17,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:41:17,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:41:17,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:41:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:41:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:41:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:41:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:41:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:41:18,011 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:41:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:41:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:41:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:41:18,012 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:41:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:41:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:41:18,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:41:18,020 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:41:18,346 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:41:18,346 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:41:18,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:41:18 BoogieIcfgContainer [2020-10-09 17:41:18,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:41:18,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:41:18,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:41:18,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:41:18,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:41:17" (1/3) ... [2020-10-09 17:41:18,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607e9dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:41:18, skipping insertion in model container [2020-10-09 17:41:18,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:41:17" (2/3) ... [2020-10-09 17:41:18,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607e9dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:41:18, skipping insertion in model container [2020-10-09 17:41:18,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:41:18" (3/3) ... [2020-10-09 17:41:18,357 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2020-10-09 17:41:18,368 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:41:18,374 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:41:18,375 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:41:18,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,404 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,404 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,406 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,407 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,407 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,408 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,408 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,409 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,413 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,414 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,421 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,424 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,424 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,424 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,425 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:41:18,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 17:41:18,459 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:41:18,459 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:41:18,459 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:41:18,460 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:41:18,460 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:41:18,460 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:41:18,460 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:41:18,460 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:41:18,472 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 17:41:18,516 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-09 17:41:18,516 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:41:18,521 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 17:41:18,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 17:41:18,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-09 17:41:18,548 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-09 17:41:18,548 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:41:18,548 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:41:18,549 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:41:18,550 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:41:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:41:18,557 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-10-09 17:41:18,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:41:18,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410867829] [2020-10-09 17:41:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:41:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:41:18,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:41:18,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:41:18,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:41:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:18,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:41:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:18,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410867829] [2020-10-09 17:41:18,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:41:18,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:41:18,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251792780] [2020-10-09 17:41:18,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:41:18,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:41:18,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:41:18,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:41:19,162 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-09 17:41:19,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 8 states. [2020-10-09 17:41:19,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:41:19,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-09 17:41:19,166 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:41:19,282 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-09 17:41:19,282 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:41:19,283 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 69 events. 3/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 74. Up to 7 conditions per place. [2020-10-09 17:41:19,284 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 6 selfloop transitions, 2 changer transitions 11/65 dead transitions. [2020-10-09 17:41:19,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 175 flow [2020-10-09 17:41:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:41:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:41:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 562 transitions. [2020-10-09 17:41:19,304 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8920634920634921 [2020-10-09 17:41:19,304 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 562 transitions. [2020-10-09 17:41:19,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 562 transitions. [2020-10-09 17:41:19,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:41:19,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 562 transitions. [2020-10-09 17:41:19,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:41:19,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:41:19,325 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:41:19,327 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 562 transitions. [2020-10-09 17:41:19,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 175 flow [2020-10-09 17:41:19,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 17:41:19,337 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-09 17:41:19,340 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-09 17:41:19,341 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-09 17:41:19,341 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-09 17:41:19,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:41:19,342 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:41:19,342 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:41:19,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:41:19,563 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:41:19,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:41:19,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1782370427, now seen corresponding path program 1 times [2020-10-09 17:41:19,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:41:19,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65599505] [2020-10-09 17:41:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:41:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:41:19,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:41:19,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:41:19,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:41:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:19,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:41:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:19,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65599505] [2020-10-09 17:41:19,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:41:19,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:41:19,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104197280] [2020-10-09 17:41:19,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:41:19,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:41:19,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:41:19,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:41:19,869 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-09 17:41:19,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 8 states. [2020-10-09 17:41:19,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:41:19,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-09 17:41:19,870 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:41:19,957 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-09 17:41:19,957 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-09 17:41:19,958 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 77 events. 3/77 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 116. Up to 7 conditions per place. [2020-10-09 17:41:19,958 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-09 17:41:19,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 208 flow [2020-10-09 17:41:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:41:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:41:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-09 17:41:19,962 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-09 17:41:19,962 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-09 17:41:19,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-09 17:41:19,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:41:19,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-09 17:41:19,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:41:19,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:41:19,967 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:41:19,967 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 9 states and 560 transitions. [2020-10-09 17:41:19,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 208 flow [2020-10-09 17:41:19,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 176 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 17:41:19,970 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 138 flow [2020-10-09 17:41:19,971 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=138, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-09 17:41:19,972 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-09 17:41:19,972 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 138 flow [2020-10-09 17:41:19,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:41:19,972 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:41:19,972 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:41:20,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:41:20,190 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:41:20,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:41:20,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1486544178, now seen corresponding path program 1 times [2020-10-09 17:41:20,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:41:20,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696234697] [2020-10-09 17:41:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:41:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:41:20,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:41:20,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:41:20,278 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:41:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:20,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:41:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:20,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696234697] [2020-10-09 17:41:20,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:41:20,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:41:20,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916994993] [2020-10-09 17:41:20,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:41:20,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:41:20,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:41:20,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:41:20,532 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-09 17:41:20,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 138 flow. Second operand 8 states. [2020-10-09 17:41:20,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:41:20,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-09 17:41:20,534 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:41:20,691 INFO L129 PetriNetUnfolder]: 18/151 cut-off events. [2020-10-09 17:41:20,691 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2020-10-09 17:41:20,692 INFO L80 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 151 events. 18/151 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 573 event pairs, 0 based on Foata normal form. 5/154 useless extension candidates. Maximal degree in co-relation 249. Up to 15 conditions per place. [2020-10-09 17:41:20,693 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 10 selfloop transitions, 5 changer transitions 23/83 dead transitions. [2020-10-09 17:41:20,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 316 flow [2020-10-09 17:41:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:41:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:41:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 808 transitions. [2020-10-09 17:41:20,697 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8879120879120879 [2020-10-09 17:41:20,697 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 808 transitions. [2020-10-09 17:41:20,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 808 transitions. [2020-10-09 17:41:20,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:41:20,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 808 transitions. [2020-10-09 17:41:20,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:41:20,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:41:20,702 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:41:20,702 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 138 flow. Second operand 13 states and 808 transitions. [2020-10-09 17:41:20,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 316 flow [2020-10-09 17:41:20,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 83 transitions, 264 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:41:20,707 INFO L241 Difference]: Finished difference. Result has 86 places, 56 transitions, 164 flow [2020-10-09 17:41:20,707 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=164, PETRI_PLACES=86, PETRI_TRANSITIONS=56} [2020-10-09 17:41:20,708 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-09 17:41:20,708 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 56 transitions, 164 flow [2020-10-09 17:41:20,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:41:20,708 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:41:20,708 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:41:20,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:41:20,928 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:41:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:41:20,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1977013327, now seen corresponding path program 1 times [2020-10-09 17:41:20,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:41:20,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167475077] [2020-10-09 17:41:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:41:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:41:20,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:41:20,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:41:21,028 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:41:21,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:41:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:21,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:41:21,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:21,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167475077] [2020-10-09 17:41:21,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:41:21,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 9 [2020-10-09 17:41:21,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283613038] [2020-10-09 17:41:21,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:41:21,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:41:21,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:41:21,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:41:21,325 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 17:41:21,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 56 transitions, 164 flow. Second operand 9 states. [2020-10-09 17:41:21,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:41:21,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 17:41:21,326 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:41:21,458 INFO L129 PetriNetUnfolder]: 10/140 cut-off events. [2020-10-09 17:41:21,459 INFO L130 PetriNetUnfolder]: For 150/197 co-relation queries the response was YES. [2020-10-09 17:41:21,460 INFO L80 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 140 events. 10/140 cut-off events. For 150/197 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 507 event pairs, 2 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 267. Up to 20 conditions per place. [2020-10-09 17:41:21,461 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 13 selfloop transitions, 4 changer transitions 12/72 dead transitions. [2020-10-09 17:41:21,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 317 flow [2020-10-09 17:41:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 17:41:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 17:41:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 657 transitions. [2020-10-09 17:41:21,465 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8532467532467533 [2020-10-09 17:41:21,465 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 657 transitions. [2020-10-09 17:41:21,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 657 transitions. [2020-10-09 17:41:21,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:41:21,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 657 transitions. [2020-10-09 17:41:21,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 17:41:21,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 17:41:21,469 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 17:41:21,470 INFO L185 Difference]: Start difference. First operand has 86 places, 56 transitions, 164 flow. Second operand 11 states and 657 transitions. [2020-10-09 17:41:21,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 317 flow [2020-10-09 17:41:21,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 257 flow, removed 30 selfloop flow, removed 9 redundant places. [2020-10-09 17:41:21,474 INFO L241 Difference]: Finished difference. Result has 86 places, 56 transitions, 173 flow [2020-10-09 17:41:21,474 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=173, PETRI_PLACES=86, PETRI_TRANSITIONS=56} [2020-10-09 17:41:21,475 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-09 17:41:21,475 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 56 transitions, 173 flow [2020-10-09 17:41:21,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:41:21,475 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:41:21,475 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:41:21,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:41:21,689 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:41:21,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:41:21,689 INFO L82 PathProgramCache]: Analyzing trace with hash -463582195, now seen corresponding path program 2 times [2020-10-09 17:41:21,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:41:21,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985174568] [2020-10-09 17:41:21,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:41:21,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-09 17:41:21,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 17:41:21,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:41:21,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:41:21,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:41:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:21,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:41:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:21,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985174568] [2020-10-09 17:41:21,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:41:21,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:41:21,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719709200] [2020-10-09 17:41:21,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:41:21,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:41:21,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:41:21,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:41:22,037 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-09 17:41:22,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 56 transitions, 173 flow. Second operand 9 states. [2020-10-09 17:41:22,038 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:41:22,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-09 17:41:22,038 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:41:22,183 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2020-10-09 17:41:22,183 INFO L130 PetriNetUnfolder]: For 160/193 co-relation queries the response was YES. [2020-10-09 17:41:22,184 INFO L80 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 133 events. 10/133 cut-off events. For 160/193 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 492 event pairs, 2 based on Foata normal form. 6/136 useless extension candidates. Maximal degree in co-relation 268. Up to 14 conditions per place. [2020-10-09 17:41:22,185 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 6 selfloop transitions, 4 changer transitions 14/68 dead transitions. [2020-10-09 17:41:22,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 68 transitions, 278 flow [2020-10-09 17:41:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 17:41:22,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 17:41:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 604 transitions. [2020-10-09 17:41:22,188 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8628571428571429 [2020-10-09 17:41:22,188 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 604 transitions. [2020-10-09 17:41:22,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 604 transitions. [2020-10-09 17:41:22,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:41:22,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 604 transitions. [2020-10-09 17:41:22,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 17:41:22,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 17:41:22,192 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 17:41:22,192 INFO L185 Difference]: Start difference. First operand has 86 places, 56 transitions, 173 flow. Second operand 10 states and 604 transitions. [2020-10-09 17:41:22,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 68 transitions, 278 flow [2020-10-09 17:41:22,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 235 flow, removed 17 selfloop flow, removed 10 redundant places. [2020-10-09 17:41:22,196 INFO L241 Difference]: Finished difference. Result has 86 places, 54 transitions, 168 flow [2020-10-09 17:41:22,196 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=168, PETRI_PLACES=86, PETRI_TRANSITIONS=54} [2020-10-09 17:41:22,197 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-09 17:41:22,197 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 54 transitions, 168 flow [2020-10-09 17:41:22,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:41:22,197 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:41:22,197 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:41:22,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:41:22,409 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:41:22,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:41:22,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1836052273, now seen corresponding path program 1 times [2020-10-09 17:41:22,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:41:22,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133591301] [2020-10-09 17:41:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:41:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:41:22,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:41:22,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:41:22,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:41:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:22,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:41:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:41:22,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133591301] [2020-10-09 17:41:22,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:41:22,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:41:22,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756826064] [2020-10-09 17:41:22,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:41:22,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:41:22,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:41:22,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:41:22,824 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 17:41:22,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 54 transitions, 168 flow. Second operand 9 states. [2020-10-09 17:41:22,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:41:22,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 17:41:22,826 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:41:22,911 INFO L129 PetriNetUnfolder]: 5/90 cut-off events. [2020-10-09 17:41:22,911 INFO L130 PetriNetUnfolder]: For 78/99 co-relation queries the response was YES. [2020-10-09 17:41:22,912 INFO L80 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 90 events. 5/90 cut-off events. For 78/99 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 195 event pairs, 1 based on Foata normal form. 5/95 useless extension candidates. Maximal degree in co-relation 181. Up to 12 conditions per place. [2020-10-09 17:41:22,912 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2020-10-09 17:41:22,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 57 transitions, 216 flow [2020-10-09 17:41:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 17:41:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 17:41:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 415 transitions. [2020-10-09 17:41:22,916 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8469387755102041 [2020-10-09 17:41:22,916 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 415 transitions. [2020-10-09 17:41:22,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 415 transitions. [2020-10-09 17:41:22,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:41:22,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 415 transitions. [2020-10-09 17:41:22,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 17:41:22,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 17:41:22,920 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 17:41:22,920 INFO L185 Difference]: Start difference. First operand has 86 places, 54 transitions, 168 flow. Second operand 7 states and 415 transitions. [2020-10-09 17:41:22,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 57 transitions, 216 flow [2020-10-09 17:41:22,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 57 transitions, 182 flow, removed 7 selfloop flow, removed 11 redundant places. [2020-10-09 17:41:22,925 INFO L241 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2020-10-09 17:41:22,925 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2020-10-09 17:41:22,928 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 8 predicate places. [2020-10-09 17:41:22,928 INFO L481 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2020-10-09 17:41:22,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:41:23,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:41:23,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:41:23 BasicIcfg [2020-10-09 17:41:23,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:41:23,159 INFO L168 Benchmark]: Toolchain (without parser) took 5988.64 ms. Allocated memory was 251.1 MB in the beginning and 423.6 MB in the end (delta: 172.5 MB). Free memory was 206.5 MB in the beginning and 288.8 MB in the end (delta: -82.3 MB). Peak memory consumption was 90.1 MB. Max. memory is 14.2 GB. [2020-10-09 17:41:23,160 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:41:23,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.85 ms. Allocated memory was 251.1 MB in the beginning and 312.0 MB in the end (delta: 60.8 MB). Free memory was 206.5 MB in the beginning and 264.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. [2020-10-09 17:41:23,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.14 ms. Allocated memory is still 312.0 MB. Free memory is still 264.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:41:23,162 INFO L168 Benchmark]: Boogie Preprocessor took 27.17 ms. Allocated memory is still 312.0 MB. Free memory was 264.8 MB in the beginning and 262.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:41:23,163 INFO L168 Benchmark]: RCFGBuilder took 402.23 ms. Allocated memory is still 312.0 MB. Free memory was 262.3 MB in the beginning and 240.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-09 17:41:23,164 INFO L168 Benchmark]: TraceAbstraction took 4806.65 ms. Allocated memory was 312.0 MB in the beginning and 423.6 MB in the end (delta: 111.7 MB). Free memory was 237.9 MB in the beginning and 288.8 MB in the end (delta: -50.9 MB). Peak memory consumption was 60.8 MB. Max. memory is 14.2 GB. [2020-10-09 17:41:23,168 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 251.1 MB. Free memory is still 227.5 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 700.85 ms. Allocated memory was 251.1 MB in the beginning and 312.0 MB in the end (delta: 60.8 MB). Free memory was 206.5 MB in the beginning and 264.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.14 ms. Allocated memory is still 312.0 MB. Free memory is still 264.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.17 ms. Allocated memory is still 312.0 MB. Free memory was 264.8 MB in the beginning and 262.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 402.23 ms. Allocated memory is still 312.0 MB. Free memory was 262.3 MB in the beginning and 240.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 4806.65 ms. Allocated memory was 312.0 MB in the beginning and 423.6 MB in the end (delta: 111.7 MB). Free memory was 237.9 MB in the beginning and 288.8 MB in the end (delta: -50.9 MB). Peak memory consumption was 60.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 297 SDslu, 490 SDs, 0 SdLazy, 394 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 515 GetRequests, 426 SyntacticMatches, 15 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 246 NumberOfCodeBlocks, 246 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 480 ConstructedInterpolants, 0 QuantifiedInterpolants, 50788 SizeOfPredicates, 61 NumberOfNonLiveVariables, 636 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...